Internal-combustion engine.



PATBNTED SEPT. 8, 1908.

D. ROBERTS. INTERNAL GOIBUSTION ENGINE.

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N0. 898,139. PATENTED SEPT. 8, 1908. D. ROBERTS. INTERNAL COMBUSTION ENGINE.

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Wk M42 1%. 898,189. PATBNTBD SEPT. a, 1908.

n. nomms. INTERNAL consumes ENGINE.

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,Toaawllomitmoycmmi Be it known that 1, DAVID Room, a aubect of theKing of Great Britain, reai at to "Iron Worka, mm, Linco d, have invented new and neoful Impwementa in Internal-Combuation I which the following in a apeciflca on.

I My invention relatea 'to internal combuation ace in which hydrocarbon fuel il ueed an to that type. of auch engine wherein the vaporiaer or combustion chamber ia formed an anextenaion of the cylinder and connected to it by. a more or leaa contracted 18 neck or paaaage. The vaperiaer or co bultionchamberofauchanenginehal, aome caaea, been divided into twaportiona, a hot and a cell! or wabr-jaoke art, and in othereaaea, ha been whe'llyj we. In :0 their inlet and enhauat outlet valvea have i uently .been arrangedin one valve-box m a pa-e common to the valvea opening direetin thecylmder ropar, and new timea 2e tglbagvea havzh'hn-gn in :8 v xea opemng '.d1rec" t into iii? p wa - with air inlet-v ve o direct into the vapon'ler or comb on c amber'and the exhauat.outlet-valve a aepa rate'valve-box with a,paaaage direct intoJhe cylinderaprofer. 1th the ehove arrengemente e ope-of com reeaionthatoanbeuaedialinntedbythe arge 8i clearance apa'cee niceaeitate'd by each arrangem'ant and alao the power and etiiciency obtainpdjroni a cylinder otgiven nae have been hnuted owing to the amount of inert air contained in the above named clearance apacea and varioua paaaagea and valve boxea outeide the vaporizer or cornbuation chamber, and the large euriace m the port and expoeod to the hot gain during the combustion stroke.

My inmntion ban for its object tobenable enginea' vaporizere or 'com uatien chambera above-named type to develop ore power tvith a cylinder of Elfin aize d give gnileater efliciency than hitherto, 3y obtaining 'gher compreaaion and introuem va or combuetiop ehakmberaluring the en teeom reeeionatreean e ite own cylinder caeea alao the have beenaralninimum of aurface to contact with during the comhu'etion atmlte, by do- -ing away with the uaual porta and paaaagea a greater proportion of air into,the-

between the va riaer or combuetion chamher and the c'y der and air inlet and exhauet outlet valvee.

In carry out my invention I a an 0 hi erabl onthe oftheco or wa ter a nx'eted pazt of the i a pioriner or combuation chamber, which opemn acta alteror the ma of the iaton t and'in either use are pref rably one a flecting valve and the ower the exhaust deflectingvalve. Theae valvce'may also be of the mushroom tygn arranged side by side or the accompanying drawings, in which:-

Figure 1 ie a longitudinal sectional elevaof a horizontal engine ha apptlied thereto, the cylinder provided w; double beet drop deflecting 1 Fig. 2 ie a sectional endelevation on the line 2 2, Fig. 1. Fig. 3 in a view aimilar WW. 1

my invention fiectin valvea are of th! piaton type and arranger one above the other. Fig. 4 iaa aimilar view to 3-eho ieton type defleeting 'valvee arranged ai e y aide. 5 is a section on line 6- 5, Fi 4. Fig. 6 in a longitudinal aectional elevation 05} trizer and part of the cylinder and mushroom type placed one a ve the other; Pig. 7 ie a section on the line 7-4, Fig. 6.-

a vaporizer and cylinder having deflecting valvea of the muahroom type a b aide, and F 9 in a partaection thermi an t e line 9--9, lg. 8 nil the engine cylinder, 8 i thdputon and 'tion of the vaporizer and part 'of the cylinder he vapouatrating an arrangement of deflectin valves of the nately an the air-inlet and uat-outlet" and eatabliahea on once tibn through: the n chamber wi the let-port, and the openhg and cloaingel'each what areknown ae doublebeat drop-valvaa, I

I0 ove the other, the u par being the air deone above the at In order that m invention be iylly underatood I will eacribe it by erem to a owing an arrangement wherein the de- Fig. 8 ie a part aectional end elevationof rrangezs vida e and d are the water-jacketed and hot parts of the vaporizer respectively.

e ll the contracted passage by which the water-jacketed part c of the vaporizer is connected to the cylinder a and f is the oil-inlet.

g is the opening in the art e of the vaporiser which opening acts a ternately as the air inlet and the exhaust outlet h is the sealing valve opening inwardly and controlling the opening g.

its t iechamber in whichare arranged the air inlets k and theexhaustoutlets j. r

l is the air deflecting-valve, and m is the exhaust deflecting valve, the said valves-being of any of the types andarranged as illustrated in the accompanyin drawings.

In engines working on tlo ()tto or fourstroke cycle the valves perform the following functions. The main sealing valve it closes the opening 9 in the side of the wateriacketed part c of the vaporizer thereby o a seal during the combustion stroke; this v ve also controls the time of comple-' tion of the air inlet or induction stroke and the time of commencement of the exhaust or outlet stroke. The air deflecting valve 1 controls the time of commencement of the air inlet or induction stroke and the exhaust deflec valve-m controls the time of completion the exhaust or outlet stroke. With t ment of valves the air and exhaust deflecting valves have practically no pressure to resist, and the exhaust valve, if of the double-beat drop-type or piston type, is so arranged that as it, opens it enters into a chamber above it and immediatel beneath theair valve, and ,thugis practical y shielded from aetionsn the issuing ahaust sees; the maximum pressure due to the exp osion or combustion stroke is resisted by the main sealing1 vslve, am to 1111!! main sealing v intoteva rizeror eombrf the clesran spaces are reduced to a minimum, thereby minimizing the amount of heat lost b conduction to the water acket and by rs 'ation with the increased power and efficiency are obtained.

The main valve hand the air and $0 exhaust deflecting valves 1 and m may be operated may of the well-known means so as to isle proper sequence of operations and al nghs'uy invention isahown a plied to a horizontal type of engin it will obvious 88 that it may equally well I 'applied to other,

t of engines.

fiaving now fully described and ascermy said inventionand the manner in which it is to .be performed, I declare that what I claim is:-

1. In an internal combustion engine,- the cgjnbination with the cylinder and piston, of a vap izing chamber exterior to but directly -.-nnmunicatin with tlfe cylinder, and

11871113; a portion -o its wall not provided with with a water jacket, and other portions pro vided with a water 'arket, said chamber having an aperture on t as water urkon'd side, communicating with the'air llllti and exhaust passages and valves controlling said pass es, whereby said aperture serves as the air in ct and the exhaust outlet, substantially as described.

2. In an internal combustion engine, the combination with the cylinder and piston, of a. vaporizing chamber exterior to but directly communicating with the cylinder, and having a portion of its wall not provided with a water jacket, and other rtions provided with awater jacket, said 0 amber havso. ing an aperture on the water jacketed side, communicating with the air inlet and exhauat passa s, whereby said aperture serves as the air in at and the exhaust outlet, and a sealing valve for controlling said aperture, substantially as described.

3. In an internal combustion engine, the

combination with the cylinder and piston, of

a vaporizing chamber exterior to but directly communicating with the cylinder, and having a portion of its wall not provided with a water jacket, and other ortions m yided with awater jacket, said 0 amber ravmg an aperture on the waterjacketed side, communicating with the air 1nlet and exhaust passages, valves for controlling said air inlet and exhaust passages, and an independent sealing valve controlling said aperture, substantially as described.

4. In an internal combustion engine, the

combination with the cylinder and piston, of

a vaporizing chamber communicatin with the cylinder, and provided with a. fue inlet,

and an aperture separate from the fuel inlet air inlet and exhaust passages connected said a rture, separate controlling valves for sail air inlet and exhaust passages and an indegsndent-sealin valve for said aperture, su tantially as ascribed.

'5. In an internal comb'ustion'engine, the

, combination with the cylinder and piston, of

a vaporizing chamber communicatin with the cylinder, and provided with nine inlet, and an aperture separate from the fuel inlet air inlet and exhaust passages connected with said a rture, separate controlling valves for sail air inlet and exhaust passages and an independent sealing valve for said aperture, all of said valves being concur-h ti'ically arranged, substnntinllv as described.

6. In an internal combustion engine, the

combination with tlw'cylimler and piston, of

a vaporizing chamber rumununicating with the cylinder and provided with a fuel inlet and an aperture svpnrnlo from said fuolinh-t 1 25 a passage comnmnu'ating with said n wrturo, air inlet and exhaust passages communicating with said passage, valves in said passage, controlling said air inlet and oxhnusl passages, and a sealing vnlvo conl rolling said enema a e rture, ell of ma velvee beu! eoneenthe eir inlet end exheuet mi 3 velvee anbetantielly u eecribed. i working in aid p for cloein ieid en- 7-. en internal combustion engine, the radar peeeegee, e lee valve controlling combination with a cylinder end piston, of aid eperture end eeperete eetuetin meene e e vaporizing chamber eommunicetin with .for eech of aid velvel, eubetentlelly a de- 1b the cylinder end provided with e fue inlet ecribetL end en eperture sepa rate from aid fuel inlet,

DAVID ROBERTS. -e communicating with aid aperture Witnessee:

end heving eeperete ennuler peuegee coni- W. Hume, 1o municeting therewith and forming p'erte of C. W. Pun. 

